<template>
  <div class="all">
    <div>
      <link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
      <img src="../../assets/bg-c.jpg" alt="" class="wave">
      <div class="container">
        <div class="img">

        </div>

        <div class="login-box">
          <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on"
            label-position="left">
            <img src="../../assets/l2.png" alt="" class="avatar">
            <h2>电管智汇</h2>
            <div class="input-group">
              <div class="icon">

                <i class="fa fa-user"></i>
              </div>
              <div>
                <input ref="username" v-model="loginForm.username" placeholder="Username" name="username" type="text"
                  class="input">
              </div>
            </div>
            <div class="input-group">
              <div class="icon">
                <i class="fa fa-lock"></i>
              </div>
              <div>
                <input :key="passwordType" ref="password" v-model="loginForm.password" :type="passwordType"
                  placeholder="Password" name="password" tabindex="2" auto-complete="on" @keyup.enter.native="handleLogin"
                  class="input">
              </div>
            </div>
            <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;"
              @click.native.prevent="handleLogin" class="btn">Login</el-button>
          </el-form>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate';


export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      callback()
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('The password can not be less than 6 digits'))
      } else {
        callback()
      }
    }



    return {
      loginForm: {
        username: '',
        password: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,
    }
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('user/login', this.loginForm).then(() => {
            this.$router.push('/datashow/machinedata')
            this.loading = false
          }).catch(() => {
            this.loading = false
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style scoped>
* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Roboto', sans-serif;
}

.wave {

  width: 100%;
  position: fixed;
  height: 100%;
  left: 0;
  bottom: 0;
  z-index: -1;

}

.container {
  width: 100vw;
  height: 100vh;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 18rem;
  padding: 0 2rem;
}

.img {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  margin-left: 55%;
  margin-top: 12%;
}

.img img {
  width: 500px;
  margin-top: 0%;

}

.login-box {
  display: flex;
  width: 350px;
  margin-top: -12%;
  margin-left: 43%;
  align-items: center;
  text-align: center;
}

form {
  width: 100%;
}

.avatar {

  width: 100%;
}

form h2 {
  font-size: 2.9rem;
  text-transform: uppercase;
  margin: 15px 0;
  color: #999;
}

.input-group {
  position: relative;
  display: grid;
  grid-template-columns: 7% 93%;
  margin: 25px 0;
  padding: 5px 0;
  border-bottom: 2px solid #d9d9d9;
}

.input-group:nth-child(1) {
  margin-bottom: 4px;
}

.input-group:before,
.input-group:after {
  content: '';
  position: absolute;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: #38d39f;
  transition: .5s;
}

.input-group:after {
  right: 50%;
}

.input-group:before {
  left: 50%;
}

.icon {
  display: flex;
  justify-content: center;
  align-items: center;
}

.icon i {
  color: #d9d9d9;
  transition: .5s;
}

.input-group>div {
  position: relative;
  height: 45px;
}

.input-group>div>h5 {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: #d9d9d9;
  font-size: 18px;
  transition: .3s;
}

.input-group.focus .icon i {
  color: #38d39f;
}

.input-group.focus div h5 {
  top: -5px;
  font-size: 15px;
}

.input-group.focus:after,
.input-group.focus:before {
  width: 50%;
}

.input {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  border: none;
  outline: none;
  background: none;
  padding: 0.5rem 0.7rem;
  font-size: 1.2rem;
  color: #555;
  font-family: 'Roboto', sans-serif;
}

a {
  display: block;
  text-align: right;
  text-decoration: none;
  color: #999;
  font-size: 0.9rem;
  transition: .3s;
}

a:hover {
  color: #38d39f;
}

.btn {
  display: block;
  width: 100%;
  height: 50px;
  border-radius: 25px;
  margin: 1rem 0;
  font-size: 1.2rem;
  outline: none;
  border: none;
  background-image: linear-gradient(to right, #327fbe, #38c1d3, #329dbe);
  cursor: pointer;
  color: #fff;
  text-transform: uppercase;
  font-family: 'Roboto', sans-serif;
  background-size: 200%;
  transition: .5s;
}

.btn:hover {
  background-position: right;
}

.copyright {
  position: absolute;
  width: 100%;
  height: 50px;
  bottom: 2px;
  color: #38d39f;
  text-align: center;
  font-size: 18px;
  font-family: 'Roboto', sans-serif;
}

/*媒体查询*/
@media screen and (max-width: 1080px) {
  .container {
    grid-gap: 9rem;
  }
}

@media screen and (max-width: 1024px) {
  form {
    width: 290px;
  }

  form h2 {
    font-size: 2.4rem;
    margin: 8px 0;
  }

  .img img {
    width: 360px;
  }
}

@media screen and (max-width: 768px) {
  .wave {
    display: none;

  }

  .img {
    display: none;
  }

  .container {
    grid-template-columns: 1fr;
  }

  .login-box {
    justify-content: center;
  }
}
</style>
